/usr/lib/python2.7/dist-packages/cylc/profiler.py is in python-cylc 7.6.0-1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 | #!/usr/bin/env python
# THIS FILE IS PART OF THE CYLC SUITE ENGINE.
# Copyright (C) 2008-2017 NIWA
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""Cylc memory and performance profiling."""
import os
import cProfile
import StringIO
import pstats
from subprocess import Popen, PIPE
class Profiler(object):
"""Wrap cProfile, pstats, and memory logging, for performance profiling."""
def __init__(self, enabled=False):
"""Initialize cProfile."""
self.enabled = enabled
if enabled:
self.prof = cProfile.Profile()
else:
self.prof = None
def start(self):
"""Start profiling."""
if not self.enabled:
return
self.prof.enable()
def stop(self):
"""Stop profiling and print stats."""
if not self.enabled:
return
self.prof.disable()
string_stream = StringIO.StringIO()
stats = pstats.Stats(self.prof, stream=string_stream)
stats.sort_stats('cumulative')
stats.print_stats()
print string_stream.getvalue()
def log_memory(self, message):
"""Print a message to standard out with the current memory usage."""
if not self.enabled:
return
proc = Popen(["ps", "h", "-orss", str(os.getpid())], stdout=PIPE)
memory = int(proc.communicate()[0])
print "PROFILE: Memory: %d KiB: %s" % (memory, message)
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